Infrared Timer (IRTIM) in STM32F4

[shara]

Posted on October 26, 2016 at 03:00

Hello, I trying to make IR transmitter with STM32F4DISCOVERY demoboard and found in

http://stmcufinder.com/wp-content/uploads/training/STM32L4-WDG_TIMERS-Infra-Red-Timer-%28IRTIM%29.swf

that it F4 MCU should have built-in periph for mixin PWM from two timers - one for carrier frequency and second for signal modulation. But I can't find such thing in datasheet or reference manual. Is it there? And what is the best way to make IR transmitter without this thing? I made two timers - carrier, which connected to GPIO and data modulator, which toggling carrier in interrupt, but I think it can be done better. #stm32f4 #irtim

[Walid FTITI_O]

Posted on October 28, 2016 at 17:22

Hoi name.shara,

For the timer synchronization as master Trigger/ slave gated  , to start ans stop counter at the same toime , you would take a look to the ready-to-use example in STM32CubeF4 ''TIM_Synchronization'' at this path: STM32Cube_FW_F4_V1.13.0\Projects\STM324xG_EVAL\Examples\TIM\TIM_Synchronization-Hannial-